Abstract #1622
Joint Field Map and Metabolite Image Reconstruction Framework for Hyperpolarized 13 C Spiral CSI
Ulrich Koellisch 1,2 , Rolf F. Schulte 2 , Markus Durst 1,2 , Axel Haase 1 , and Florian Wiesinger 2
1
IMETUM, Technical University Mnchen,
Munich, Germany,
2
GE
Global Research, Munich, Germany
An algorithm for IDEAL spiral CSI reconstruction of
hyperpolarized 13C metabolites is presented. It
calculates field maps or CS frequencies and metabolite
images with a joint estimation approach. The field maps
gets estimated by a set of polynomials. The estimation
of the CS-frequencies decreases the number of necessary
excitations, because no extra spectra have to be
recorded. The application of the off-resonance
correction on in-vivo datasets has shown, that this
approach increases the image quality due to a reduced
amount of blurring in the metabolite maps.
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